District of colombia



(No Model.)

G. G. SCHROEDER. LIQUID PURIPIER.

No. 447,585. Patented Mar. 3, 1891.

Illll'll'lll'lfllaII'IIIIII d 4 a w v m: NORRIS vnzns co.. PNDYO-UYNQ, WASHINGTON, n. c

NITED rarns GEORGE G. SCHROEDER, OF WASHINGTON, DISTRICT OF COLUMBIA.

LIQUID-PURIFIER.

SPECIFICATION forming part of Letters Patent No. 447,585, dated March 3, 1891.

Application filed March 6, 1890. Serial 110342336. (No model.)

To aZZ whom it may concern.-

, Beit known that I, GEORGE G. SCHROEDER, a citizen of the United States, residing at \Vashington, District 7 of Columbia, have in vented certain new and useful Improvements in Liquid-Purifiers; and I do declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the-accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to a device for purifying water or other liquids.

The object of this invention is to produce a device which will thoroughly and rapidly purify water or other liquids of inherent or local impurities by bringing the said liquid into contact with successive charges of electricity during certain stages of the operation and subsequently forcing it through a suitable filtering substance.

A further object of the invention is to produce a device which shall combine simplicity, durability, and economy in its construction.

My invention consists in a pipe through which the water to be purified is passed, the said pipe having conducting-points extending inwardly therefrom, the points upon the opposite sides thereof beinginsulated from each other and being connected with the opposite poles of the source of electricity; and it also consists in the construction, arrangement, and combination of the several parts of which it is composed, as will be hereinafter more fully described and claimed. I

In the accompanying drawings, forming part of this specification, and in which like numerals of reference indicate corresponding parts, I have illustrated one form of device embodying the essential features of my invention, although the same may be carried into effect in other ways without in the least departing from the spirit thereof, and in these drawings-=- Figure 1 is a side elevation of my device, partly in section, showing the relative arrangement of the different parts. Fi 2 is avertical sectional view of the induction-pipe, show ing its peculiar construction. Fig. 3 is a top plan view of the same. Fig. is also a vertical sectional. view showing another form of induction-pipe which maybe employed in lieu of that shown in Fig. 2, and Fig.5 is a top plan view of the pipe illustrated in Fig. 4:.

Referring to the drawings, 1 designates a supply-pipe, which may be made to connect with a suitable liquidsupplying sourcesuch from each other by means of strips of suitable insulating material 7, clearlyshown in Fig.

3. Through these sections extend a series of inwardly-projecting conducting-points 8, which are by preference of aluminum, but any other suitable conducting material may be employed. To one or more points on one of these sections is secured a negative wire of a battery, while to the points on the opposite section a positive wire of the same battery is attached. Thus it will be seen that when the wires are connected a flow of electricity will pass through the sections, thus charging each of the points, which charge remains static until the circuit is completed by means of the liquid which flows through the pipe, when a spark or flow of current will be interchanged from the positive to the negative points, and vice versa, thereby effectuallykilling the many animalculie found in most waters. As the liquid passes through this pipe,

itis thoroughly agitated and turned in upon material, and is provided with a reticulated or foraminous screen 9, upon which the Water is discharged from the induction-pipe, and

through which it passes to the lower part of' the tank or reservoir. Thus should any im- 1.)urities-such as dead wood, leaves, or sand pass through the pipe they will be caught by the screen and prevented from passing to the lower part of the tank.

\Vithin the tank is mounted an eductionpipe 10, the lower end of which extends below the screen 5) and carries a filter 11, consisting of a suitable cylindrical body 12, provided with a foraminous bottom 13 and a similar foraminous partition 14-, secured near or at the top of said cylinder. Between these two partitions is confined asuitable filtering substanceas, for example, charcoal and sand. The upper end of the eduction-pipe carries a dischargespout 15 and also a valve-cock 16 to shut oil? the flow of water or other liquid when desired. \Vhen the form of inductionpipe illustrated in Fig. 2 is employed, it is necessary to insulate it from the supply pipe and tank, otherwise the whole device would become charged, and thereby render the induction-pipe incapable of accomplishing the result for which it is designed. In order to remedy this evil a gasket or block of insulated material 17 is placed around the induction'pipe at the pointwhere it enters the tank, and a similar block 18 at the point where it enters the supply-pipe. Thus the only por tion of the device which is charged when the batteries are connected is the induction-pipe.

In Fig. 4 I have shown the induction-pipe constructed of an insulated substance-such as gutta percha or similar material-and through this pipe extends a series of conductingpoints 19, which extend beyond the exterior of the pipe a sufiicient distance to admit of their being connected by wires 20. In this instance one half of the points are in connection with the positive wire of the battery and the other half are in connection with the negative wire. Thus when the battery is connected it will be found to operate in the same manner as the induction-pipe illustrated in Fig. 2, for the reason that as the pipe itself is of an insulating material the points will be insulated from each other and will only be affected by that current passing through the wire to which they are connected. In this instance I have only shown a single battery; but it is obvious that the number may be increased so as to produce the desired electromotive force. The supply-pipe 1 is also shown provided with a valve-cock 21, by means of which the supplyot' liquid to the tank maybe cut off when it is desired to repair or clean the tank or lilter or replace a new inductionpipe.

Having now described the different parts of my device I will explain the method of its operation. The valve-cock 21 is turned and the liquid allowed to pass through the supply pipe down through the ind uctionpipe, where it is brought into contact with successive charges of electricity through the conductingpoints and is then discharged upon the screen 9, through which it passes to the bottom of the reservoir. As the flow of liquid continues, the tank becomes filled and the pressure from above forces the liquid up through the filter and out through the eduction-pipe. It will be found that should the water when discharged from the induction-pipe be muddy and foul when it passes from the eductionpipe it will be clear and pure.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a pipe consisting of two longitudinal sections insulated from each other, of conducting-points projecting inwardly from the said sections, and a suitable source of electricity having its opposite poles connected with the opposite sections, as describcd.

2. The combinatio11,with a pipe consisting of two longitudinal sections insulated from each other and having a single central bore, of conducting-points consisting of non-oxidizable material projecting inwardly from the said sections, and a source of electricity the opposite poles of which are connected to the opposite sections, as described.

3. The combination, with the pipe having inwardly-projecting conducting-points thereon, the points upon the one side of the pipe being insulated from those upon the other,of a source of electricity having its positive pole connected with the points on the one side of the pipe and its negative pole with those on the opposite side of the pipe, as described.

In testimony whereof I affix my sign aturc in presence of two witnesses.

GEORGE G. SCI'IROEDER.

\Vitnesses:

G. W. BALLOCH, W. F. RAGAN. 

